A better solution would be to use a cut to fit the air filter instead. Just open up your window AC’s return grille on the front, and measure the filter slot to find the filter’s dimensions. After you get the length and width of the AC’s filter slot, cut out a piece of filter media and place it in the slot.
What if my air filter is too big?
If the filter is too big, then it won’t fit into the filter slot and you won’t be able to put the cover back on. This can cause dirty air to infiltrate the inside of your furnace (and home).
Does air filter have to fit exactly?
The actual size is what you’d find if you used a ruler to measure the exact dimensions of the filter. Actual sizes vary slightly depending on the brand, but in most cases, any standard size will work in a standard residential unit.
Can you cut fiberglass filter?
Fiberglass batts—one of the most popular types of insulation—is best used for flat surfaces, such as walls, floors, and ceilings. Because this style comes in a continuous roll, it must be cut into sections and often trimmed around the contours of wall outlets and other obstacles. This cutting is done by hand.
Is it OK to use a smaller air filter?
For most systems you can use a standard sized filter within 5/8-in smaller than the air filter housing. If you are not able to find a standard sized filter within that parameter, you will need to order a custom sized air filter.
Can I use a bigger air filter?
Air filters should, at least, have flow capacity to matched the engine’s needs. Failure to select filters sized large enough is detrimental to optimum performance AND economy. A secondary benefit of a filter with larger than needed surface area is longer time before replacement or cleaning.
What do air filter sizes mean?
Air Filter Sizes: Length and width
1″ and 2″ refers to the thickness or depth of the filter, which we’ll get to in a minute. First, let’s talk about length and width. Length and width are technically interchangeable, but for discussion purposes, a 12×20 is 12 inches long and 20 inches wide.
Can you put two air filters together?
Bottom Line: Putting two filters will not make it last longer but may make you have to replace it earlier, assuming it doesn’t already reduce air flow too much with just the filters.
How do I know what size air filter I need without a filter?
Follow these 3 easy steps to measure your HVAC filter size:
Step 1 – Measuring Length and Width (L x W). (If your filter is not a square, the smallest measurement goes first).Step 2 – Measure the thickness (Depth) of your filter from front to back.Step 3 – Put Your measurements together (L x W x D).
How do you cut fiberglass safely?
Unlike other construction materials like plywood, fiberglass requires several precautions for a clean and safe cut. For straight cuts, a table saw or hand-held circular saw is sufficient. However, for curved cuts, a saber saw or hand-held jigsaw will do a fine job.
What can you use to cut fiberglass?
Fiberglass panels can be cut with either a table saw or hand-held circular saw. A table saw tends to be a specialty power tool owned by series craftsmen or woodworkers with a dedicated workshop. A circular saw can be used in whatever space you plan to accomplish your construction work.
